Abstract
The scyphozoans (Cnidaria) are a cosmopolitan group present in all marine habitats, from abyssalareas to coastal reefs. Success in occupying different zones is attributed to its metagenetic life-cycledivided into three stages, a sexed free swimming stage (medusae), the larval stage formed after thefusion between eggs and sperms (planula) and an asexual benthic phase (polyp), the first of …